<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="../vue.js"></script>
</head>

<body>
    <div id="app">
        <!-- 如果把data放在textarea的双标签内部 name只能进行单向绑定数据 -->
        <textarea name="message">{{msg}}</textarea>
        <!-- 使用v-model可以对textarea进行双向绑定 -->
        <textarea name="message" v-model="msg"></textarea>
    </div>

    <script>
        Vue.config.prodactionTip = false

        const vm = new Vue({
            el: "#app",
            data() {
                return {
                    msg: "今天真凉快"
                }
            }
        })
    </script>
</body>

</html>